Simple Grid.xaml
<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid.RowDefinitions> <RowDefinition Height="100" /> <RowDefinition Height="Auto" /> <RowDefinition Height="100*" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="33*" /> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="67*" /> </Grid.ColumnDefinitions> <Button Content="Button No. 1" Grid.Row="0" Grid.Column="0" /> <Button Content="Button No. 2" Grid.Row="1" Grid.Column="0" /> <Button Content="Button No. 3" Grid.Row="2" Grid.Column="0" /> <GridSplitter HorizontalAlignment="Center" Width="6" Grid.Row="0" Grid.Column="1" Grid.RowSpan="3" /> <Button Content="Button No. 4" Grid.Row="0" Grid.Column="2" /> <Button Content="Button No. 5" Grid.Row="1" Grid.Column="2" /> <Button Content="Button No. 6" Grid.Row="2" Grid.Column="2" /> </Grid>